Protects against max "undefined" values coming back as the value for a altprop.  This appears to be exceedingly rare since we've not come across it until now, but a legit problem when it crops up.
Protects against max "undefined" values coming back as the value for a altprop.  This appears to be exceedingly rare since we've not come across it until now, but a legit problem when it crops up.

git-svn-id: a3b746cc1383a42926249ed33eaccad697259b1b@16516 896c8824-d3f5-0310-9c61-ac502b9a79dc

blurstudio/cross3d